Fascist Rebel bombardment of Madrid, during Spanish Civil War, angers population and promotes recruitment into the Republican Army. A group of men march down a street with a small boy, who appears to be in boy scout uniform, in the front rank, carrying a flag. Recruits are seen being organized into marching groups. Sidewalk in front of a railroad station is filled with new recruits. They march under direction of Republican soldiers. Motorcade of automobiles carrying Manuel Azana Diaz, President of Spain, stops surrounded by an enthusiastic crowd, in Valencia. The President steps from his car, enters a building, and delivers a speech emphasizing the democratic election of the government and decrying the need to defend it and the soil of Spain from fascist rebels. Scene shifts to several men in rural area, discussing the need to complete new irrigation projects in time for new defense of Madrid. They already have their pump and must build the pump house. One man types on a typewriter while another sketches the plan to pump water from the Rio Tajo (Tagus River), to irrigate crops. View of horse-drawn wagon loaded with cement for construction. Two men discussion construction plans. Masons using rudimentary methods to erect a pump house. Later view of pump house as men work on the roof. Men digging irrigationl canal from the river and upward toward the agricultural fields. A soldier who hitched a ride on a truck, jumps off. View of a letter he wrote a few days ago, on May 4th. He arrives at his house and is greeted by his mother. Farmers trimming plants in field to be irrigated. A boy calls one of them, his father, to come home.